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Constants Part A kg bar of aluminum? (Aluminum has 13 electrons per atom and an atomic mass of 27 u.) What is the total charg
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Answer #1

Mass of 1 Al atom = 1.67 x 10^-27 x 27 = 4.51 x 10^-26

No. of Al atoms = 18/(4.51 x 10^-26) = 4 x 10^26

No. of electrons = 4 x 10^26 x 13 = 5.2 x 10^27

Charge of atom = 5.2 x 10^27 x 1.6 x 10^-19 = 8.32 x 10^8 C

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